Lepai LP-2020A+ Tripath Class-T Hi-Fi Audio Mini Amplifier (power supply not included) Compact size makes this amplifier great for projects and DIY audio applications 3.5 mm jack allows for easy connection to iPods, cell phones, and all sorts of mp3 players Aluminum enclosure that is lightweight, yet sturdy, and acts as a heat sink Tripath TA2020 amplifier chip provides efficient, powerful sound Economical price and tremendous performer